-er -ey b-p bbb bbe bbi bbn bbp bbr bbs bby be- beb bee bei ben bep ber bes bey bi- bib bie bii bin bip bir bis biy bnb bne bni bnn bnp bnr bns bpb bpe bpi bpn bpp bpr bps bpy brb bre bri brn brp brr brs bry bsb bse bsi bsn bsp bsr bss bsy by- bye byi byn byp byr bys ebb ebe ebi ebn ebp ebr ebs eby eeb eee een eep eer ees eey eib eie eii ein eip eir eis en- enb ene eni enn enp enr ens eny ep- epb epe epi epn epp epr eps erb ere eri ern erp err ers ery es- esb ese esi esn esp esr ess esy eye eyn eyp eyr eys ibb ibe ibi ibn ibp ibr ibs iby ie- iee iei ien iep ier ies iey iib iie iii iin iip iir iis in- inb ine ini inn inp inr ins iny ipb ipe ipi ipn ipp ipr ips ipy ir- irb ire iri irn irp irr irs iry is- isb ise isi isn isp isr iss isy iye iyr iys iyy n-i nbb nbe nbi nbn nbp nbr nbs ne- neb nee nei nen nep ner nes ney nib nie nii nin nip nir nis nnb nne nni nnn nnp nns npb npe npi npn npp npr nps nrb nre nri nrn nrp nrr nrs nry nsb nse nsi nsn nsp nsr nss nsy nye nyn nyp nys nyy p-p pbb pbe pbi pbn pbp pbr pbs pby peb pee pei pen pep per pes pey pib pie pii pin pip pir pis pn- pnb pne pni pnn pnp pnr pns pny ppb ppe ppi ppn ppp ppr pps prb pre pri prn prp prr prs pry ps- psb pse psi psn psp psr pss psy py- pyb pye pyn pyr pys rbb rbe rbi rbn rbp rbr rbs re- reb ree rei ren rep rer res rey rib rie rii rin rip rir ris riy rnb rni rnn rnp rnr rns rny rpb rpe rpi rpn rpp rpr rps rrb rri rrn rrp rrr rrs rsb rse rsi rsn rsp rsr rss ry- rye ryn ryr rys ryy sbb sbe sbi sbn sbp sbr sbs sby se- seb see sei sen sep ser ses sey sib sie sii sin sip sir sis snb sne sni snn snp snr sns sny spb spe spi spn spp spr sps spy sr- srb sre sri srn srp srr srs sry ss- ssb sse ssi ssn ssp ssr sss sy- syb sye syi syn syp syr sys ybe ybi ybp ybr ybs yby yeb yee yei yen yep yer yes yey yie yii yin yip yir yis yne ynn ynp yns yny yps yre yrn yrp yrs ysb yse ysi ysp ysr yss ysy yyb yye yys yyy